For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
Although alligators cannot breathe underwater, they are able to hold their breath for long periods of time while submerged. Usually these creatures are able to hold their breath anywhere from 4 to 15 minutes; however they have been known to remain underwater for longer periods of time if necessary.